Clubs in the Scottish Championship and League 1 will return to using the five subs rule for the remainder of the season after voting to follow the lead of the Premiership.
SPFL chiefs confirmed that second and third tier had backed proposals to increase the number of changes they can make in games from three - as well as the number of subs they can name to nine.
It falls into line with the top and bottom divisions after the Premiership sides returned to using five subs earlier this month.